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Drill Hole Lithology Summary <br />0 Drill Hole Easting Northing Collar Total Depth Township Range Section File <br />• <br />0.00 <br />12.50 <br />12.50 intensely <br />weathered <br />sandstone <br />buff brow <br />to yellow <br />12.50 <br />15.10 <br />Y25 <br />2.60 weathered <br />weathered coal <br />black/bro <br />15.10 <br />23.00 <br />7.90 weathered <br />sandstone <br />buff <br />yellow <br />23.00 <br />28.50 <br />5.50 interbedded <br />mudstone /sandstone <br />dark grey <br />buff brow <br />28.50 <br />28.50 <br />OXID <br />0.00 <br />28.50 <br />35.50 <br />7.00 interbedded <br />w/ silty layers <br />sandstone <br />light <br />grey <br />35.50 <br />79.70 <br />44.20 interbedded <br />mudstone /sandstone <br />light -dark <br />grey <br />79.70 <br />82.60 <br />2.90 fissile <br />occ coal lams <br />mudstone <br />dark <br />grey <br />82.60 <br />83.60 <br />1.00 fissile <br />coaly <br />shaley coal <br />black <br />83.60 <br />87.00 <br />X3 <br />3.40 bright, blocky <br />pyritic <br />coal <br />black <br />87.00 <br />93.15 <br />X4 <br />6.15 bright, blocky <br />pyritic <br />coal <br />black <br />93.15 <br />93.70 <br />0.55 clayey <br />coal lams <br />carbonaceous mudston <br />black -dk <br />93.70 <br />94.70 <br />1.00 sandy <br />argillaceous <br />siltstone /mudstone <br />medium <br />grey <br />94.70 <br />112.50 <br />17.80 <br />mudstone /siltstone <br />medium- <br />grey <br />112.50 <br />118.50 <br />6.00 argillaceous <br />mudstone <br />dark <br />grey <br />118.50 <br />123.30 <br />4.80 interbedded <br />mudstone /siltstone <br />medium- <br />grey <br />123.30 <br />124.80 <br />Al <br />1.50 <br />coal <br />124.80 <br />126.50 <br />1.70 <br />mudstone <br />dark <br />grey <br />126.50 <br />155.50 <br />29.00 interbedded <br />silty <br />mudstone /sandstone <br />dark <br />grey <br />155.50 <br />164.10 <br />8.60 <br />mudstone <br />dark <br />grey <br />164.10 <br />165.40 <br />1.30 fissile <br />soft <br />mudstone <br />dark <br />grey <br />165.40 <br />165.80 <br />0.40 fissile <br />coaly lams <br />shaley coal <br />black <br />165.80 <br />166.30 <br />ZZ <br />0.50 bright <br />ashy band <br />coal <br />black <br />166.30 <br />166.90 <br />0.60 fissile <br />coal lams <br />shaley coal <br />black <br />166.90 <br />169.40 <br />B1 <br />2.50 bright <br />pyritic coating <br />coal <br />black <br />169.40 <br />172.25 <br />B2 <br />2.85 bright <br />pyritic coating <br />coal <br />black <br />172.25 <br />172.50 <br />0.25 dull <br />boney coal <br />black <br />172.50 <br />175.05 <br />B3 <br />2.55 bright <br />pyritic coating <br />coal <br />black <br />175.05 <br />175.40 <br />0.35 fissile <br />coaly <br />shaley coal <br />black <br />175.40 <br />177.70 <br />2.30 coarsening dow <br />mudstone <br />very dark <br />grey <br />177.70 <br />179.10 <br />1.40 hard <br />siltstone <br />medium <br />grey <br />179.10 <br />189.00 <br />9.90 <br />mudstone /siltstone <br />medium- <br />grey <br />189.00 <br />208.30 <br />19.30 <br />sandstone /siltstone <br />medium <br />grey <br />208.30 <br />211.50 <br />3.20 silty <br />clayey <br />mudstone /sandstone <br />dark <br />grey <br />211.50 <br />213.50 <br />C3 <br />2.00 bright, blocky <br />pyritic <br />coal <br />black <br />213.50 <br />213.90 <br />0.40 silty <br />coal lams <br />bone <br />black/bro <br />213.90 <br />215.70 <br />1.80 <br />siltstone /sandstone <br />light -med <br />grey <br />215.70 <br />216.30 <br />0.60 clayey <br />mudstone <br />dark <br />grey <br />Rio Tinto Energy America - Colowyo Mine Page 699 of 1194 <br />